Apparatus for the manufacture of sodium-carbonate crystals.



M. SPAZIER. APPARATUS FOR THE MANUFACTURE OF SODIUM UARBONATB CRYSTALS. APPLLGATION HLED APR.29,1914

1,127,691. Patented Feb.9, 1915.

Messrs sesame, q-IIJCIJHJ "'1 {3, i swan .n an

APPARATUS ron'rHn maivusnc-runn or sonmamaizsonass cnYs'rALs.

manna.

To all whom it may; concern:

.Be it known that 1, Monroe Srazrns, a citizen of the United States of America, and resident of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in r-rpparatus for the Manufacture of Sodium-Carbonate Crystals, of which the following is a. specifica tion.

This invention relates to improvements in apparatus for the manufacture of sodium carbonate and has foran object to produce an apparatus which is simpler and cheaper than, other apparatus known to me.

A further object is to produce an apparatus which is capable ofproducing sodium carbonate more rapidly and in larger quantities than other apparatus known to me.

A further object is to produce an apparatus in which very little labor and no power is required in the production of the washing soda.

These and other objects are attained in the apparatus described in the following specification and illustrated in the accompanying drawings in which 9- Figure 1 is a plan view of the apparatus embodying my invention. Fig. 2 is a front elevation of the apparatus illustrated in Fig.1 and showing a portion of the apparatus in section. liig. 3 is an end elevation of the apparatus shown inFig. 1 with a portionthereof broken away for clearness of illustration. Fig. 4 is a fragmental sectional view showing a detail of the apparatus embodying my invention. Figs. :3, 6 and 7 are perspective views illustrating details of the apparatus Jembodying my invention.

The apparatus consistsof two tanks 8 and 9 which are placed adjacent to one another, a third tank 10 which is much smaller than the tanks 8 and 9 and which is located in such a position with relation to the tanks 8 and 9 that openings in tank 10 will communicate with either of the tanks 8 or 9, and a drain receptacle 11, which is located above tanks 8 and-9 and preferably in front a of tank 10 as illustrated. Cross bars 12' i o'having hangers-13, are placed. transversely of {tanks 8 and 9 so that the hangers depending therefrom. will extend into the ,tank.

are quite long and wide so that the exposed 56 surface Qt'thesolutionpcontained in each tank-sis relatively-large m comparisonto its Specification of Letters Fa wa Application filed April 25 V 191;. Serial its. 83-. 10;.

The tanks 8 and 9 are shallow and Patented Feb. 9, 1915.

ars 12 are provided at j around the periphery S and 9, and the na ers 1a m pre -ideal with oppositely extending hooked portions 1'? adapted to engage the transversely extending ,0IlllOllS 18 ,f the s. The hooked portions 17 end of'the hangers 13 'l of the hangers may he placed on the or... bars. The tank 10 is bly located at the back of the tanks in such a position that a portion of the bottom of the tank extends over the interior of the tanks 8 and 9, in order that the openings and 20 in tank 10, will communicate A Suppoi 2i. and are provided at the rear .lge of tank 10. A simple and inexpensive means of closing the openings 19 and 20 in tank 10 is shown in Fig. i. In alinement with these openings, flanged pipe couplings 223 are secured to the bottom of the tank as shown in Fig. 4, and a section of pipe 24,

-of a length greater than the depth of the ported on the support members 25 so that the low-vest iointof the receptacle is abov'e the tops of the tanks 8 and 9 as shown in 2. The bottom which constitutes the drain board of the receptacle, is made so that a portion "26 thereof, will-dischar e liquid into tank 8 and the other half 2 will discharge liquid into tank 9. The back of the receptacle is preferably made somewhat higher than the front 29, so that material placed on the drain board will not fall into tank 10. The ends of the drain receptacle are reinovably mounted in slides 30 formed at each end of thefronft 2 9 and back 28. These ends are removable in order that the contents of the drain'ieceptacl'e may be more easily removed a'nd'also top'rovide for cleaning it, and they are Made so that they may be removed or replaced in sections. The reason fortlii's construction is that the quantity of sodium carbonate removed from the tanks 8 and} may not lie lend over the flanges vectii'ely with the tanks 8 and 9..

In use, a screen 34 shown in Fig. 7 is placed across the longitudinal edges of either one or the other of the tanks 8 or 9 and'soda ash or dehydrated sodium carbonate is placed thereon and sifted so as to remove any foreign matter and to break u large lumps of the soda ash before it is p aced in the tank. Suilicient water to form a saturated solution of the soda ash, is now;

poured into the tank andlthe mixture of water and soda ash is then agitated until the soda ash is completely dissolved and the solution is clear. The cross bars are-now placed in position as shown in Fig. 1 and the hangers 13 are placed on the cross bars so that they are uniformly spaced thereon and extend into the solution. The tank is now left and the solution is -allowed to remain undisturbed, for a certain time, until the crystals of washing soda have formed in the solution. In crystallizing, the crystals of washing soda start their formation about the hangers 13, these hangers forming a nucleus about which. the system of crystallization will be established. The'purpose of supplying'a great-number of hangers, is to provide, a .number ofpoints around which crystallization may start, thereby hastening the process of crystallizing the mass of solution contained 1n the tank. The hangers preferably are evenly distributed in the tanks and at a distance apart'such that they do not prevent the crystals falling to the bottom, when, in the process of crystallization, a sheet of crystals has formed, the weight thereof breaking it and allowing the crystals to fall to the bottom, ready for the formation of another sheet of crystals. In this manner, the formation and precipitation of crystals is carried on until a great roportion of the substance in solution has een converted in crystals. After one tank has been prepared, the other tank is prepared for the formation of washin soda, in a like manner. .After the cr sta s have formed in thetank firstprepare the cross Jbars 12 and han ers 13 are removed and. 00

any solution wh ch is not crystallized is bailed 'outof the tank and-placed in tank 10 at the rear of the apparatus. The crysta s of washing soda in the crystallizmg tank 8 or 9, are now placed in the rece tacle 11 and the excess or remaining solution in out.

the crystalline mass is allowed to drain therefrom and to flow into each of the tanks 8 and 9. Afterthe crystals have been re moved from the first prepared tank and placed on the drain board, this tank may be again prepared for repeating the process. The washing soda after having drained sufficiently is now placed in barrels for shi ment. By this time the washing soda in the second prepared tank is ready to be removed and the same procedure is carried It will be seen that the oper'ationof the apparatus is such that the manufacture of washingsoda ma be carried on continuously and that i a number of such units as disclosed in this application, is placed in operation, the production may be carried on continuously and in large quantities, inn most inexpensive and simple manner.

The solution taken from the tanks 8 or 9, and which is placed in tank 10 previous to the removal of the washing soda to the drain board, may be allowed to flow into either one or the other of tanks 8'or 9 to be added 'to freshly prepared solution containedin either. of these tanks.

moved from the crystallizing tanks. l

the liquor or solution which. has been 'replant having aigreat Y l A It willthusbe seen that there is absolutely no waste of By usingan apparatus embodyi'n .my

invention, the manufacturerof was soda not only arger quantities and more 'rapi 1y.- In

1s saved expense in price of nstallation and also in labor, over previous roduct addition to thisthe producer is saved the necessi of em lo in steam machine and ad itional c y ry ofthis product. Having thus described my invention what I claim is:

-. 1. An apparatus fer producing washing soda, comprising two c stallizing tanks, a surplus solution tank ocated above and adapted to discharge into either one or the other of said crysta lizing tanks, and-a drain emica s in the production board located above and ada ted. to disan apparatus oft e character deadapted to extend .into the solution contamed in said tank to form a nucleus around which the formation ofcrystalswill take place.

the combination of a crystallizing' charge into both of said 0 sta .izing tanks.

3. In an apparatus of the ,charac'ter'de.

scribed, the eombinationof a crystallizing tank, supports for hangers, means for mounting the supports over the tank, the

hangers on said supports adapted to extend into the solution contained in the tank to form nuclei around which the formation ofcrystals will take place.

4. An apparatus for producing sodlum carbonate crystals, com rising two or stallocated above said space and having a bot-\ tom which has a central raised portion and side portions descending therefrom and extending over the adjacent tanks and ada ted to discharge the draina e into the tan s.

In testimony whereof, have hereunto subscribed my name this 25th day of April,

MORRIS SPAZIEB.

Witnesses: v

WA 'rsn' F. MURRAY,

nonmox Boomrr. 

